North American Network Operators Group

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Re: Time to check the rate limits on your mail servers

  • From: Guðbjörn S. Hreinsson
  • Date: Thu Feb 03 18:51:36 2005

>> How about using SMTP AUTH and verifying the envelope MAIL FROM to match
>> the actual user authenticating?
> that doesn't work if you have more than one email address.

Wouldn't address resolution take care of that if properly 
configured? Some implementations allow you to specify what 
email addresses the user is allowed to send from, that's 
something that needs to be managed carefully.